$79 Cheap Alaska Airlines flights Seattle (SEA) to San Francisco (SFO)

Landing cheap one-way Alaska Airlines flights from SEA to SFO from $79 on Expedia couldn’t be simpler — just filter by “Price (lowest to highest).” Alternatively, check out our affordable return fares for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for return or one-way flights to San Francisco in February or April. You could find an affordable fare with Alaska Airlines during these off-season months.

Search for affordable Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to San Francisco Intl. Airport (SFO) one to three months ahead of your day of departure. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day to book a domestic flight is usually Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Skip the layovers and fly from Seattle - Tacoma Intl. Airport (SEA) to San Francisco Intl. Airport (SFO) on any of Alaska Airlines’s 54 direct weekly flights. Make use of our “Nonstop” and “Airline” filters to find the Alaska Airlines flight that’ll get you to SFO at your preferred time.

Depart Seattle - Tacoma Intl. Airport (SEA) for San Francisco Intl. Airport (SFO) on a direct Alaska Airlines flight, and you’ll be in the sky for around 2h 15m.

Alaska Airlines operates the most flights from Seattle - Tacoma Intl. Airport (SEA) to San Francisco Intl. Airport (SFO) on Sunday. With up to 9 daily departures, you’ll get the most flexibility and choice on this day.

Departing SEA at 6:55AM UTC-8, the first Alaska Airlines flight to SFO arrives at 9:11AM UTC-8. Flying early means you’re less likely to experience cancellations.* Prefer to travel later? The last Alaska Airlines flight from SEA to SFO departs at 9:35PM UTC-8 and touches down at 11:49PM UTC-8.*Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to San Francisco land at San Francisco Intl. Airport (SFO), Norman Y. Mineta San Jose Intl. Airport (SJC) and Oakland Intl. Airport (OAK). The main San Francisco gateway for this airline is SFO. It’s worth checking out flights landing at other nearby airports on Expedia as they may have lower fares.

Alaska Airlines makes traveling from SEA to SFO more comfortable with a rewarding loyalty program and top-tier customer service. You also have the chance to earn points with Mileage Plan. Don’t forget to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Alaska Airlines typically flies Boeing 737-900 planes for flights from Seattle - Tacoma Intl. Airport (SEA) to San Francisco Intl. Airport (SFO). This carrier also operates the Embraer 175 on this route. Bear in mind that aircraft type can vary depending on operational demands, so the plane you board could be different when you leave.

Changes are typically free within 24 hours of booking, but your airline may add a charge after that. For more information about altering your reservation, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to adjust your plans without additional costs, check the “Changes included” or “No cancel fee” filter when organizing your next getaway.